CN101633124B - Drilling fixture for oilgear mounting hole in lower case of engine - Google Patents
Drilling fixture for oilgear mounting hole in lower case of engine Download PDFInfo
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- CN101633124B CN101633124B CN2008100211172A CN200810021117A CN101633124B CN 101633124 B CN101633124 B CN 101633124B CN 2008100211172 A CN2008100211172 A CN 2008100211172A CN 200810021117 A CN200810021117 A CN 200810021117A CN 101633124 B CN101633124 B CN 101633124B
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Abstract
The invention provides a drilling fixture for an oilgear mounting hole in a lower case of an engine, and relates to the field of drilling fixtures for oilgear mounting holes in lower cases of engines. A positioning plate (2) of the drilling fixture (42) for the oilgear mounting hole in the lower case of the engine is provided with a positioning core (11) and an eccentric sleeve (3); a retainer ring (1) is clamped in the eccentric ring (3); positioning sleeves (4) are arranged in the eccentric sleeve (3) and a linkage plate (5); drill bushings (10) are arranged in the linkage plate (5) and an upper pressure plate (9); a nut (6) and a gasket (7) are arranged on a step mandrel (12), and a locking collar (8) is clamped in the positioning core (11); and the upper pressure plate (9) is inserted in the positioning core (11) in which the step mandrel (12) is arranged, and the step mandrel (12) is arranged on the fixture (14). The drilling fixture has the advantages of compact structure, precise drill positioning, and simple and convenient operation.
Description
Technical field:
Drilling fixture for oilgear mounting hole in lower case of engine of the present invention relates to the drill jig that the installing hole of oilgear in the lower case of engine body is holed, and belongs to the drill jig field of oilgear installing hole in the processing lower case of engine body.
Background technology:
The motive power outputting apparatus of graden machines such as lawn machine, rotary cultivator all needs to use petrol engine, and lower box is the strength member on the petrol engine.Lower box inside mainly is equipped with bent axle, oilgear and some other related components.One end of bent axle is installed in the spindle hole of lower box, and spindle hole is a circular hole; Timing gears are installed on the bent axle, and timing gears link to each other by the keyway of woodruff key and bent axle; And timing gears and oilgear Vertical Meshing, oilgear is installed in the lower box; The blank alignment pin of installation oilgear and installing hole to be processed are arranged on the lower box.Lubricating oil in the lower box relies on the rotation of oilgear and splashes, thereby just can make lubricating oil enter oil storage tank fully, and the lubricating oil in the oil storage tank is used for normal lubricated use of each running gear of supply engine.
Above-mentioned oilgear accurate location in lower box can guarantee that timing gears and oilgear accurately and engagement reliably, have only both accurately to mesh reliably, just can avoid engine driving to occur, get rid of the oil unequal serious problems of splashing.In order to guarantee oilgear location accurately on lower box, just need design invention one cover be used to process the installing hole drill jig that oilgear in the lower case of engine body is installed, to guarantee the accurate location of oilgear in the workpiece lower box.
Summary of the invention:
The objective of the invention is promptly to form drilling fixture for oilgear mounting hole in lower case of engine of the present invention by described clamp member and clamp body assembly for a kind of installing hole processing clamp member of holing and clamp body assembly that lower case of engine body workpiece is installed to oilgear in the lower case of engine body is provided.
A kind of drilling fixture for oilgear mounting hole in lower case of engine, drilling fixture for oilgear mounting hole in lower case of engine is made up of clamp member and clamp body assembly, clamp member includes back-up ring, location-plate, eccentric bushing, positioning sleeve, interlock plate, nut, pad, retainer, top board, drill bushing, location core, the clamp body assembly includes ladder mandrel, alignment pin and clamp body, in the location core installing hole on the location-plate location core is installed, in the eccentric bushing installing hole on the location-plate eccentric bushing is installed; Back-up ring is installed in the back-up ring draw-in groove of eccentric bushing; In the positioning sleeve installing hole in the eccentric bushing in the eccentric bushing on eccentric orfice and the interlock plate positioning sleeve is installed; In the drill bushing installing hole on the interlock plate and in the drill bushing installing hole on the top board drill bushing is installed; Nut and pad are installed on the ladder mandrel upper end snail line axle of ladder mandrel; Retainer is installed in the retainer draw-in groove of location core; Be coated with core upper end, the location cylindrical on core top, location in the location core installing hole of top board; Be set with cylinder on the ladder mandrel of ladder mandrel in the ladder mandrel installing hole of location in-core, the cylinder bottom is installed in the ladder mandrel installing hole of clamp body under the ladder mandrel, and alignment pin is installed in the straight pin installing hole of clamp body.
Drilling fixture for oilgear mounting hole in lower case of engine of the present invention is made up of clamp member and clamp body assembly two parts, the clamp body assembly is used for installing additional lower case of engine body workpiece and clamp member is used, clamp member is passed through the accurate position of location-plate, eccentric bushing, positioning sleeve alignment pin on centering workpiece on the workpiece lower case of engine body, and by the drill bit on the drill bushing guiding drilling machine oilgear installing hole to be processed is accurately processed.
The basic principle of drilling fixture for oilgear mounting hole in lower case of engine design of the present invention is as follows:
1, the clamp body assembly is wanted can be fixed on the drilling machine, passes through the pressing plate clamping and positioning on the T-slot of drilling machine; Cylinder is sleeved in the ladder mandrel installing hole of location core of clamp member on the ladder mandrel on the clamp body assembly, and clamp body assembly and clamp member can be installed together.
2, the location core lower end cylindrical of clamp member and workpiece to be processed lower box spindle hole matched in clearance.
3, pass through the accurate position of positioning sleeve alignment pin on centering workpiece on the workpiece to be processed lower box of clamp member, position, thus the distance of center circle between the definite lower box spindle hole center of circle and the alignment pin center of circle.
4, owing to locate being linked together by top board between core and the drill bushing, therefore, the distance of center circle between the core center of circle, location and the drill bushing center of circle is changeless.
5, owing to be connected by interlock plate between positioning sleeve and the drill bushing, therefore the distance between positioning sleeve and the drill bushing can be regulated by the eccentric bushing in the positioning sleeve, when the unsteady offset of eccentric bushing can adapt in lower box spindle hole and the lower box between the oilgear alignment pin centre-to-centre spacing scattered error scope, the boring processing of lower box oilgear installing hole then to be processed just can be protected.
Drilling fixture for oilgear mounting hole in lower case of engine of the present invention is made up of clamp member and clamp body assembly two parts, and the structure to them is described as follows now:
Clamp member is made up of back-up ring, location-plate, eccentric bushing, positioning sleeve, interlock plate, nut, pad, retainer, top board, drill bushing and location core.
Back-up ring is a check ring, and the effect of back-up ring is to be used for location-plate, eccentric bushing, positioning sleeve and interlock plate installation are linked together, and back-up ring is installed in the back-up ring draw-in groove of eccentric bushing.
Location-plate is used for the spindle hole of lower box to be processed and eccentric bushing are positioned.On location-plate, have location core installing hole, be used for installing core upper end, the location cylindrical of location core, also have the eccentric bushing installing hole on the location-plate, have eccentric bushing installing hole step surface on eccentric bushing installing hole top, so that the eccentric bushing seam periphery of eccentric bushing can be taken a seat on the core shift on the eccentric bushing installing hole top that the is installed in location-plate cover installing hole step surface.
Centre-to-centre spacing between eccentric bushing installing hole on the location-plate and the location core installing hole has guaranteed the location of floating between the spindle hole of workpiece to be processed lower box and the eccentric bushing.
Eccentric bushing is for having eccentric bushing seam periphery has the back-up ring draw-in groove in eccentric bushing cylindrical bottom cylindrical shroud on eccentric bushing cylindrical top, its eccentric bushing seam periphery, be landed on the eccentric bushing installing hole step surface on the location-plate, scurry under the eccentric bushing preventing, the back-up ring draw-in groove on the eccentric bushing is used for clamping back-up ring.
In eccentric bushing, have eccentric orfice in the eccentric bushing, be used for installing positioning sleeve.
The center of circle of eccentric orfice does not overlap with the center of circle of eccentric bushing cylindrical in the eccentric bushing, has unsteady offset, designed unsteady offset δ is 0.5 millimeter, the unsteady offset of eccentric bushing is that the centre-to-centre spacing scattered error is used between control and adaptation workpiece lower box spindle hole and the interior oilgear alignment pin of lower box, when this scattered error is adjusted within the reasonable range, lower box oilgear installing hole (corresponding to the drill bushing hole) then to be processed adds and just can obtain reliable guarantee man-hour.
Positioning sleeve is inserted in the interior eccentric orfice of eccentric bushing of eccentric bushing, and the effect of positioning sleeve is located for the accurate position of centering alignment pin on the workpiece lower box.
The step exterior circular column that positioning sleeve is made up of positioning sleeve stub end, positioning sleeve neck and positioning sleeve lower end outside cylinder, in the outside cylinder of positioning sleeve lower end, have locating hole and horn mouth, the locating hole of upper end and the horn mouth of lower end fuse, locating hole is sleeved on the interior cylinder alignment pin of workpiece lower box, bell-mouthed effect is to use according to the scope centering of offset, diameter difference in big outer nose circle diameter in horn mouth lower end and horn mouth upper end are little between the nose circle diameter is 2 times of the unsteady offset δ of eccentric bushing, i.e. 0.5 millimeter * 2=1 millimeter.
The positioning sleeve stub end is installed on the positioning sleeve installing hole on the interlock plate, scurries under the positioning sleeve preventing; The positioning sleeve neck is installed in the positioning sleeve installing hole of interlock plate, both matched in clearance; Positioning sleeve lower end outside cylinder is installed in the interior eccentric orfice of eccentric bushing of eccentric bushing, and both interference fit are synchronized with the movement positioning sleeve and eccentric bushing.
Interlock plate is an oval shape flat board, the effect of interlock plate is that positioning sleeve and drill bushing are coupled together, after centering is located on the cylinder alignment pin in positioning sleeve is sleeved on the workpiece lower box, the position of drill bushing just has been determined, thereby the position of oilgear installing hole to be processed also just has been determined, just can processes accurately by drilling machine.
Have the positioning sleeve installing hole in interlock plate one side, be used for installing positioning sleeve, have the drill bushing installing hole at the interlock plate opposite side, be used for installing drill bushing, positioning sleeve installing hole on the interlock plate and the centre-to-centre spacing between the drill bushing installing hole have just guaranteed the centre-to-centre spacing between the cylinder alignment pin on the relative workpiece lower box in oilgear installing hole center to be processed on the workpiece lower box.
The effect of nut and pad is that the locking of the top board of clamp member is connected on the ladder mandrel of clamp body assembly.
Nut is installed on the ladder mandrel upper end snail line axle of ladder mandrel upper end.
Pad is positioned at the nut below, also is sleeved on the ladder mandrel upper end snail line axle of ladder mandrel upper end the core installing hole top, location that pad is positioned and is pressed on top board.
Nut and pad unite two into one clamp member and clamp body assembly, form drilling fixture for oilgear mounting hole in lower case of engine of the present invention.
Retainer is a connector, and retainer is snap-fit in the retainer draw-in groove of core upper end, location, and its effect is that location-plate, top board and location core three are linked together.
The effect of top board has two, and first top board, location-plate and location core three compress and link together; It two is that drill bushing is linked together by top board and location core, to guarantee the centre-to-centre spacing between workpiece lower box spindle hole and the oilgear centre bore.
Top board one end has the drill bushing installing hole, is used for installing drill bushing; The top board other end has location core installing hole, is used for installing the location core, promptly is coated with core upper end, the location cylindrical of location core in the core installing hole of location, and both make matched in clearance.
The core installing hole lower surface, location of top board is crimped on the core installing hole top, location of location-plate, and the drill bushing installing hole lower surface of top board is crimped on the drill bushing installing hole top on the interlock plate; On core installing hole top, location the retainer step surface is arranged, in the time of in the retainer draw-in groove on retainer is installed on the location core, retainer is seated on the retainer step surface of top board simultaneously, deviates to prevent top board.
Guarantee to equal the centre-to-centre spacing between workpiece lower box spindle hole and the oilgear installing hole to be processed during centre-to-centre spacing design between drill bushing installing hole on the top board and the location core installing hole.
When drill bushing is used for guiding drill bit on the drilling machine oilgear installing hole to be processed is accurately processed.
There is drill guide bore the upper end in the drill bushing, is used for guiding drill bit centering processing boring, and there is drill bit bore the lower end.
Drill bushing is installed in the drill bushing installing hole on the interlock plate, and both make matched in clearance; Drill bushing is installed in the drill bushing installing hole of top board simultaneously, and both make interference fit, and drill bushing and top board are synchronized with the movement.
The location core is for centering lower box spindle hole position.
It is cylindrical that location core profile is ladder, and the round tube hole at center is a ladder mandrel installing hole, and the upper end of core upper end, location cylindrical has the retainer draw-in groove, is installed with retainer in the retainer draw-in groove.
The location core upper end cylindrical of location core is installed in the location core installing hole on the location-plate, and both make interference fit, and location-plate and location core are synchronized with the movement.
Core lower end, the location cylindrical of location core is installed in the workpiece lower box spindle hole, and both make matched in clearance.
The ladder mandrel installing hole of location core is used for the ladder mandrel of sectional fixture body assembly to use.
The clamp body assembly is made up of ladder mandrel, alignment pin and clamp body.
The ladder mandrel is formed whole concentric shafts by round platform rank, cylinder and ladder mandrel bottom under cylinder, the ladder mandrel on ladder mandrel upper end snail line axle, the ladder mandrel.
Nut and pad are installed on ladder mandrel upper end snail line axle make clamp member and the locking of clamp body assembly, become drilling fixture for oilgear mounting hole in lower case of engine.
Cylinder is sleeved in the ladder mandrel installing hole of location core on the ladder mandrel, and both make matched in clearance.
The cylinder lower vertical is installed in the ladder mandrel installing hole on the clamp body under the ladder mandrel, and both make interference fit.
Round platform rank, ladder mandrel bottom are installed on the ladder mandrel installing hole step surface of clamp body, in order to avoid stepped core axially goes up play.
The effect of alignment pin is that the workpiece lower box is tentatively installed the location, and alignment pin has two, is the step straight pin, is vertically mounted on respectively in two straight pin installing holes of clamp body, and both make interference fit.
The effect of clamp body be used for installing workpiece lower box and ladder mandrel, alignment pin is used.
Clamp body is the rectangular flat piece, have ladder mandrel installing hole at the clamp body middle part, ladder mandrel installing hole is a round tube hole, be used for installing cylinder usefulness under the ladder mandrel, have ladder mandrel installing hole step surface in ladder mandrel installing hole bottom, be used for installing round platform rank, the ladder mandrel bottom usefulness of ladder mandrel.On clamp body, also have the square tube hole, be used for avoiding the arc cam on the workpiece lower box.
Drilling fixture for oilgear mounting hole in lower case of engine advantage of the present invention is a compact conformation, and the boring location accurately, and is simple to operation.
Description of drawings:
Fig. 1: be drilling fixture for oilgear mounting hole in lower case of engine 42 three-dimensional exploded schematic diagrames.
Fig. 2: be drilling fixture for oilgear mounting hole in lower case of engine 42 rotary expansion cross-sectional schematic.
Fig. 3: be clamp member 49 schematic three dimensional views.
Fig. 4: be clamp member 49 rotary expansion cross-sectional schematic.
Fig. 5: be clamp body assembly 50 schematic three dimensional views.
Fig. 6: 50 broken section masters look schematic diagram for the clamp body assembly.
Fig. 7: be location-plate 2 schematic three dimensional views.
Fig. 8: be the location-plate 2 main cross-sectional schematic of looking.
Fig. 9: be positioning sleeve 4 schematic three dimensional views.
Figure 10: be the positioning sleeve 4 main partial schematic sectional view of looking.
Figure 11: be interlock plate 5 schematic three dimensional views.
Figure 12: be interlock plate 5 cross-sectional schematic.
Figure 13: be eccentric bushing 3 schematic three dimensional views.
Figure 14: be the eccentric bushing 3 main cross-sectional schematic of looking.
Figure 15: be eccentric bushing 3 schematic top plan view.
Figure 16: be top board 9 schematic three dimensional views.
Figure 17: be the top board 9 main cross-sectional schematic of looking.
Figure 18: be drill bushing 10 schematic three dimensional views.
Figure 19: be the drill bushing 10 main cross-sectional schematic of looking.
Figure 20: be location core 11 schematic three dimensional views.
Figure 21: be the location core 11 main cross-sectional schematic of looking.
Figure 22: be ladder mandrel 12 schematic three dimensional views.
Figure 23: be the ladder mandrel 12 main schematic diagrames of looking.
Figure 24: be clamp body 14 schematic three dimensional views.
Figure 25: be the clamp body 14 main cross-sectional schematic of looking.
The specific embodiment:
Referring to Fig. 1 and Fig. 2: drilling fixture for oilgear mounting hole in lower case of engine 42 of the present invention is made up of clamp member 49 and clamp body assembly 50 two parts.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, clamp member 49 is formed integral piece by back-up ring 1, location-plate 2, eccentric bushing 3, positioning sleeve 4, interlock plate 5, nut 6, pad 7, retainer 8, top board 9, drill bushing 10 and location core 11.
Referring to Fig. 1, Fig. 2, Fig. 5 and Fig. 6, clamp body assembly 50 is made up of ladder mandrel 12, alignment pin 13 and clamp body 14.
As Fig. 1, Fig. 2 and shown in Figure 4, back-up ring 1 is a circlip, is installed in the back-up ring draw-in groove 17 of eccentric bushing 3 bottoms, and its effect is location-plate 2, eccentric bushing 3, positioning sleeve 4 and interlock plate 5 to be installed link together.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 7 and Fig. 8, location-plate 2 is used for the spindle hole of workpiece to be processed lower box and eccentric bushing 3 are positioned, be connected with in big plectane one side on the location-plate 2 of semicircle rectangular slab and have location core installing hole 16 and eccentric bushing installing hole 15, location-plate 2 is dull and stereotyped, the location core installing hole 16 of location-plate 2 is a round tube hole, and core upper end, the location cylindrical 29 of location core 11 is installed in location core installing hole 16; As shown in Figure 8, have core shift cover installing hole step surface 43 on eccentric bushing installing hole 15 tops of location-plate 2, eccentric bushing 3 is installed in the eccentric bushing installing hole 15 of location-plate 2, and the eccentric bushing seam periphery 18 on eccentric bushing top is installed and is landed on the eccentric bushing installing hole step surface 43.
Referring to Fig. 1, Fig. 2, Fig. 4, Figure 13, Figure 14 and Figure 15, eccentric bushing 3 is a cylindrical shroud, the eccentric bushing seam periphery 18 of one circle evagination is arranged on eccentric bushing cylindrical 46 tops of eccentric bushing 3, have back-up ring draw-in groove 17, clamp back-up ring 1 in the back-up ring draw-in groove 17 in eccentric bushing cylindrical 46 bottoms; In eccentric bushing 3, have eccentric orfice 45 in the eccentric bushing, be used for installing positioning sleeve 4.
As shown in figure 15, the unsteady offset δ between the center of circle of the center of circle of eccentric orfice 45 and eccentric bushing cylindrical 46 in the eccentric bushing=0.5 millimeter.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, positioning sleeve 4 is inserted in the interior eccentric orfice 45 of eccentric bushing of eccentric bushing 3, and positioning sleeve stub end 21 clamps and is crimped on the interlock plate 5.
As Fig. 9 and shown in Figure 10, the concentric step exterior circular column that positioning sleeve 4 is made up of positioning sleeve stub end 21, positioning sleeve neck 20 and positioning sleeve lower end outside cylinder 19; In positioning sleeve lower end outside cylinder 19, have locating hole 38 and horn mouth 44, columniform locating hole 38 in upper end and the conical horn mouth 44 in lower end fuse, diameter difference in big outer nose circle diameter in horn mouth 44 lower ends and horn mouth 44 upper ends are little between the nose circle diameter is 2 times of eccentric bushing 3 unsteady offset δ, i.e. 0.5 millimeter * 2=1 millimeter.
Positioning sleeve stub end 21 external diameters are greater than positioning sleeve neck 20 external diameters, and positioning sleeve neck 20 external diameters are greater than positioning sleeve lower end outside cylinder 19 external diameters.Positioning sleeve lower end outside cylinder 19 is installed in the interior eccentric orfice 45 of eccentric bushing of eccentric bushing 3.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, interlock plate 5 is the oval flat board, and interlock plate 5 is connected between positioning sleeve 4 and the drill bushing 10.
Referring to Figure 11 and Figure 12, the positioning sleeve installing hole 22 of interlock plate 5 one sides is a round tube hole, and positioning sleeve neck 20 is installed in the positioning sleeve installing hole 22, both matched in clearance, and positioning sleeve stub end 21 is installed on the positioning sleeve installing hole 22 on the interlock plate 5; The diameter of the drill bushing installing hole 23 of interlock plate 5 opposite sides is greater than the diameter of positioning sleeve installing hole 22, and the centre-to-centre spacing between drill bushing installing hole 23 and the positioning sleeve 22 equals the centre-to-centre spacing between oilgear installing hole center and the lower box cylinder alignment pin.
Referring to Fig. 1 and Fig. 2, nut 6 is installed on the ladder mandrel upper end snail line axle 31 of ladder mandrel 12 upper ends; Pad 7 is positioned at nut 6 belows, is sleeved on the ladder mandrel upper end snail line axle 31 of ladder mandrel 12 upper ends, and pad 7 compresses core installing hole 25 tops, location that are positioned at top board 9.
Referring to Fig. 1, Fig. 2 and Fig. 4, retainer 8 is installed in the retainer draw-in groove 28 of core 11 upper ends, location, and with location-plate 2, top board 9 and location core 11 threes link into an integrated entity by retainer 8.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, top board 9 one ends are sleeved on the core 11 of location, are positioned at location-plate 2 tops, and top board 9, location-plate 2 and location core 11 threes are linked together; Top board 9 end in addition is equipped with drill bushing 10, and drill bushing 10 links together by top board 9 and location core 11.
Referring to Figure 16 and Figure 17, the drill bushing installing hole 24 of top board 9 one ends is a round tube hole, drill bushing 10 is installed, the location core installing hole 25 of top board 9 other ends also is a round tube hole, core upper end, the location cylindrical 29 of location core 11 is installed, and both matched in clearance have a circle retainer step surface 47 on core installing hole 25 tops, location, retainer 8 is installed in the retainer draw-in groove 28 of core 11 upper ends, location, is seated at simultaneously on the retainer step surface 47 of top board 9.
The core installing hole lower surface, location 39 of top board 9 is crimped on core installing hole 16 tops, location of location-plate 2, and the drill bushing installing hole lower surface 40 of top board 9 is crimped on drill bushing installing hole 23 tops on the interlock plate 5.
Both are the face that is parallel to each other that difference in height is arranged for the core installing hole lower surface, location 39 of top board 9 and drill bushing installing hole lower surface 40.
Centre-to-centre spacing between the drill bushing installing hole 24 of top board 9 and the location core installing hole 25 equals the centre-to-centre spacing between workpiece lower box spindle hole and the oilgear installing hole to be processed.
Referring to Fig. 1, Fig. 2 and Fig. 4, drill bushing 10 is a cylindrical shroud, and the outside cylinder of drill bushing 10 is installed in the drill bushing installing hole 23 of interlock plate 5, and both make matched in clearance, and the outside cylinder upper end of drill bushing 10 is installed in the drill bushing installing hole 24 of top board 9, and both make interference fit.
Referring to Figure 18 and Figure 19, drill guide bore 26 diameters of the circle of upper end are greater than the diameter of the circular drill bit bore 41 in lower end in drill bushing 10, and both connect into the concentric circles through hole by the conical bore of centre.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Figure 20 and Figure 21, location core 11 profiles are the ladder cylinder bodily form, and there is the ladder mandrel installing hole 27 of flexible hole shape at the center, are coated with cylinder 32 on the ladder mandrel of ladder mandrel 12 in ladder mandrel installing hole 27.
As Figure 20 and shown in Figure 21, the diameter of core lower end, the location cylindrical 30 of location core 11 has a circle retainer draw-in groove 28 greater than the diameter of core upper end, location cylindrical 29 in the upper end of core upper end, location cylindrical 29, is installed with retainer 8 in retainer draw-in groove 28.
The bottom of core upper end, location cylindrical 29 is installed in the location core installing hole 16 on the location-plate 2, both interference fit, and the top of core upper end, location cylindrical 29 is installed in the location core installing hole 25 of top board 9, and both make matched in clearance.
Referring to Fig. 1, Fig. 2, Fig. 5, Fig. 6, Figure 22 and Figure 23, ladder mandrel 12 is formed whole concentric shafts by round platform rank, cylinder 33 and ladder mandrel bottom 34 under cylinder 32, the ladder mandrel on ladder mandrel upper end snail line axle 31, the ladder mandrel, the diameter on round platform rank, ladder mandrel bottom 34 is greater than the diameter of cylinder 33 under the ladder mandrel on its top, and the diameter of cylinder 33 is greater than the diameter of cylinder 32 on the ladder mandrel on its top under the ladder mandrel.
Nut of installing on ladder mandrel upper end snail line axle 31 6 and pad 7 make clamp member 49 and 50 both lockings of clamp body assembly, constitute drilling fixture for oilgear mounting hole in lower case of engine 42.
Round platform rank, ladder mandrel bottom 34 are installed on the ladder mandrel installing hole step surface 48 of clamp body 14.
Referring to Fig. 1, Fig. 2, Fig. 5 and Fig. 6, alignment pin 13 is the step straight pin, alignment pin 13 has two, be disposed at clamp body 14 upper and lower both sides, be diagonal and be symmetrical in ladder mandrel 12 location, alignment pin 13 lower cylindrical body diameters are greater than its upper cylinder diameter, and two alignment pin 13 lower cylindrical bodies are vertically mounted on respectively in two straight pin installing holes 35 on the clamp body 14, and both interference fit connect.
Referring to Fig. 1, Fig. 2, Fig. 5, Fig. 6, Figure 24 and Figure 25, clamp body 14 is four jiaos of rectangular flat pieces that are rounded down, the place has the ladder mandrel installing hole 36 of vertical circle in the middle of clamp body 14, and cylinder 33 bottoms are installed in the ladder mandrel installing hole 36 under the ladder mandrel; In ladder mandrel installing hole 36 bottoms, have ladder mandrel installing hole step surface 48, the diameter of ladder mandrel installing hole step surface 48 is greater than the diameter of ladder mandrel installing hole 36.
Also have the square tube hole 37 of two straight pin installing holes 35 and rectangular through holes on the clamp body 14 on ladder mandrel installing hole 36 next doors, square tube hole 37 can make the arc cam on the workpiece lower box place square tube hole 37.
Claims (12)
1. drilling fixture for oilgear mounting hole in lower case of engine, drilling fixture for oilgear mounting hole in lower case of engine (42) is made up of clamp member (49) and clamp body assembly (50), clamp member (49) includes back-up ring (1), location-plate (2), eccentric bushing (3), positioning sleeve (4), interlock plate (5), nut (6), pad (7), retainer (8), top board (9), drill bushing (10), location core (11), clamp body assembly (50) includes ladder mandrel (12), alignment pin (13) and clamp body (14), it is characterized in that being equipped with in the location core installing hole (16) on the location-plate (2) location core (11), in the eccentric bushing installing hole (15) on the location-plate (2) eccentric bushing (3) is installed; Back-up ring (1) is installed in the back-up ring draw-in groove (17) of eccentric bushing (3); In the positioning sleeve installing hole (22) in the eccentric bushing in the eccentric bushing (3) on eccentric orfice (45) and the interlock plate (5) positioning sleeve (4) is installed; In the drill bushing installing hole (23) on the interlock plate (5) and in the drill bushing installing hole (24) on the top board (9) drill bushing (10) is installed; Nut (6) and pad (7) are installed on the ladder mandrel upper end snail line axle (31) of ladder mandrel (12); Retainer (8) is installed in the retainer draw-in groove (28) of location core (11); Be coated with core upper end, the location cylindrical (29) on core (11) top, location in the location core installing hole (25) of top board (9); Be set with cylinder (32) on the ladder mandrel of ladder mandrel (12) in the ladder mandrel installing hole (27) in location core (11), cylinder under the ladder mandrel (33) bottom is installed in the ladder mandrel installing hole (36) of clamp body (14), and alignment pin (13) is installed in the straight pin installing hole (35) of clamp body (14).
2. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, it is characterized in that location-plate (2) is for dull and stereotyped, core upper end, the location cylindrical (29) of location core (11) is installed in the location of location-plate (2) core installing hole (16), and eccentric bushing seam periphery (18) installation that has eccentric bushing installing hole step surface (43) eccentric bushing (3) top on eccentric bushing installing hole (15) top of location-plate (2) is landed on the eccentric bushing installing hole step surface (43).
3. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, it is characterized in that eccentric bushing (3) is a cylindrical shroud, the eccentric bushing seam periphery (18) of evagination is arranged on its eccentric bushing cylindrical (46) top, have back-up ring draw-in groove (17) in eccentric bushing cylindrical (46) bottom; In eccentric bushing (3), have eccentric orfice in the eccentric bushing (45); Unsteady offset δ in the eccentric bushing between the center of circle of the center of circle of eccentric orfice (45) and eccentric bushing cylindrical (46)=0.5 millimeter.
4. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1 is characterized in that positioning sleeve (4) forms concentric step exterior circular column by positioning sleeve stub end (21), positioning sleeve neck (20) and positioning sleeve lower end outside cylinder (19); The horn mouth (44) of locating hole (38) in positioning sleeve lower end outside cylinder (19), having and coupled lower end, the difference of the big outer nose circle diameter in horn mouth (44) lower end and its little interior nose circle diameter in upper end is 2 times of the unsteady offset δ of eccentric bushing (3), promptly 1 millimeter.
5. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, it is characterized in that interlock plate (5) is an oval shape flat board, be coated with the positioning sleeve neck (20) of positioning sleeve (4) in the positioning sleeve installing hole (22) of interlock plate (5) one sides, both matched in clearance; The diameter of the drill bushing installing hole (23) of interlock plate (5) is greater than the diameter of positioning sleeve installing hole (22), and the centre-to-centre spacing between drill bushing installing hole (23) and the positioning sleeve installing hole (22) equals the centre-to-centre spacing between oilgear installing hole and the lower box cylinder alignment pin.
6. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1 is characterized in that pad (7) is positioned at nut (6) below, and pad (7) compresses location core installing hole (25) top that is positioned at top board (9).
7. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, the drill bushing installing hole (24) that it is characterized in that top board (9) one ends is a round tube hole, drill bushing (10) is installed, the location core installing hole (25) of top board (9) other end also is a round tube hole, core upper end, the location cylindrical (29) of location core (11) is installed, both matched in clearance; The retainer (8) of on the retainer step surface (47) on core installing hole (25) top, location, having taken a seat; The core installing hole lower surface, location (39) of top board (9) is crimped on location core installing hole (16) top of location-plate (2), the drill bushing installing hole lower surface (40) of top board (9) is crimped on drill bushing installing hole (23) top of interlock plate (5), and both are the face that is parallel to each other that difference in height is arranged for core installing hole lower surface, location (39) and drill bushing installing hole lower surface (40).
8. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, it is characterized in that the outside cylinder of drill bushing (10) and both matched in clearance of drill bushing installing hole (23) of interlock plate (5), the outside cylinder upper end of drill bushing (10) and both interference fit of drill bushing installing hole (24) of top board (9); Drill guide bore (26) diameter of upper end circle is greater than drill bit bore (41) diameter of lower end circle in the drill bushing (10), and both connect into the concentric circles through hole by the conical bore of centre.
9. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, it is characterized in that locating core (11) profile and be the ladder cylinder bodily form, there is the ladder mandrel installing hole (27) of flexible hole shape the centre, the diameter of core lower end, the location cylindrical (30) of location core (11) has retainer draw-in groove (28) greater than the diameter of location core upper end cylindrical (29) in the upper end of location core upper end cylindrical (29).
10. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, it is characterized in that ladder mandrel (12) by under cylinder (32), the ladder mandrel on ladder mandrel upper end snail line axle (31), the ladder mandrel cylinder (33) and ladder mandrel the bottom round platform rank (34) form whole concentric shafts; The diameter on ladder mandrel round platform rank, bottom (34) is greater than the diameter of cylinder (33) under the ladder mandrel on top, and the diameter of cylinder under the ladder mandrel (33) is greater than the diameter of cylinder (32) on the ladder mandrel on its top; Both interference fit of ladder mandrel installing hole (36) on (33) bottom of cylinder under the ladder mandrel and the clamp body (14).
11. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, it is characterized in that alignment pin (13) is the step straight pin, alignment pin (13) lower cylindrical body diameter is greater than its upper cylinder diameter, and alignment pin (13) lower cylindrical body is connected with straight pin installing hole (35) interference fit of clamp body (14).
12. a kind of drilling fixture for oilgear mounting hole in lower case of engine according to claim 1, it is characterized in that clamp body (14) is four jiaos of rectangular flat pieces that are rounded down, the place has the ladder mandrel installing hole (36) of vertical circle in the middle of clamp body (14), in ladder mandrel installing hole (36) bottom ladder mandrel installing hole step surface (48) is arranged; On clamp body (11), also have two straight pin installing holes (35) and a rectangular square tube hole (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100211172A CN101633124B (en) | 2008-07-25 | 2008-07-25 | Drilling fixture for oilgear mounting hole in lower case of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100211172A CN101633124B (en) | 2008-07-25 | 2008-07-25 | Drilling fixture for oilgear mounting hole in lower case of engine |
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| Publication Number | Publication Date |
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| CN101633124A CN101633124A (en) | 2010-01-27 |
| CN101633124B true CN101633124B (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100211172A Expired - Fee Related CN101633124B (en) | 2008-07-25 | 2008-07-25 | Drilling fixture for oilgear mounting hole in lower case of engine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500053A (en) * | 2014-09-25 | 2016-04-20 | 安徽池州项赛机械制造有限公司 | Motor plate drilling fixture |
| CN105666185A (en) * | 2016-03-29 | 2016-06-15 | 苏州市合叶精密机械有限公司 | Fixture tool for oilgear mounting hole drilling processing |
| CN108340144B (en) * | 2018-03-21 | 2024-03-29 | 浙江太阳股份有限公司 | Synchronous automatic installation equipment for crankshaft semicircular key and cylindrical pin |
| CN111318846B (en) * | 2020-03-13 | 2022-01-04 | 天津泰正机械有限公司 | Robot welding forming equipment with jig easy to replace |
| CN112157932B (en) * | 2020-09-22 | 2022-04-08 | 厦门健康伦自动仪器有限公司 | Processing technology for ensuring concentricity of inner circle and outer circle in plastic transmission gear processing |
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| CN2171445Y (en) * | 1993-01-19 | 1994-07-13 | 何以铁 | Multifunction drill clamping apparatus |
| CN2224052Y (en) * | 1995-06-06 | 1996-04-10 | 杨儒林 | Drilling tool for working flange equal divided holes |
| CN200995336Y (en) * | 2006-12-11 | 2007-12-26 | 比亚迪股份有限公司 | Clamp for borehole |
| CN201239882Y (en) * | 2008-07-25 | 2009-05-20 | 江苏林海动力机械集团公司 | Drill fixture for engine lower box body oilgear mounting hole |
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2008
- 2008-07-25 CN CN2008100211172A patent/CN101633124B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2171445Y (en) * | 1993-01-19 | 1994-07-13 | 何以铁 | Multifunction drill clamping apparatus |
| CN2224052Y (en) * | 1995-06-06 | 1996-04-10 | 杨儒林 | Drilling tool for working flange equal divided holes |
| CN200995336Y (en) * | 2006-12-11 | 2007-12-26 | 比亚迪股份有限公司 | Clamp for borehole |
| CN201239882Y (en) * | 2008-07-25 | 2009-05-20 | 江苏林海动力机械集团公司 | Drill fixture for engine lower box body oilgear mounting hole |
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| Title |
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| CN101633124A (en) | 2010-01-27 |
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Address after: 225300 Jiangsu Province, Taizhou City Hailing District Yingchun Road No. 199 Patentee after: JIANGSU LINHAI POWER MACHINERY GROUP CO., LTD. Address before: 225300 Taizhou, Jiangsu, Thailand, No. nine, No. 14 Patentee before: Linhai Power Machinery Group Corp., Jiangsu |
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